Perhaps the first Underground "Ezine"

In June 1984 three BBS SysOps—"Grandmaster Ratte" (aka Swamp Ratte'), Franken Gibe, and Sid Vicious—founded the Cult of the Dead Cow, also known as cDc Communications, a computer hacker and DIY media organization. They published what may be the first underground ezine, also known as the Cult of the Dead Cow.